* {
    margin: 0;
    padding: 0;
    border: 0;
    list-style: none;
    text-decoration: none;
}

body {
    width: 100%;
}

header {
    width: 100%;
    min-width: 1260px;
    height: 80px;
    align-items: center;
    background-color: royalblue;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 999;
}

.nav-top {
    width: 1260px;
    margin: 0 auto;
    height: 80px;
    display: flex;
}

.logo-div {
    height: 80px;
    flex: 1;
}

.logo-div img {
    height: 80px;
    width: 180px;
}

.text-div {
    flex: 2;
    height: 80px;
}

.text-div p {
    display: flex;
    justify-content: space-between;
    line-height: 80px;
    font-size: 22px;
    color: white;
}

.info-div {
    flex: 2;
    height: 80px;
}

.info-div p {
    justify-content: space-between;
    width: 260px;
    line-height: 80px;
    font-size: 22px;
    color: white;
    display: inline-block;
}

.info-div a {
    line-height: 80px;
    font-size: 16px;
    margin-left: 150px;
    color: white;
    text-decoration: none;
    display: inline-block;
}

main {
    width: 1260px;
    min-height: 800px;
    margin: 80px auto 0;
}

.sidebar-div {
    width: 200px;
    min-height: 800px;
    float: left;
    padding: 0 20px;
    background-color: #e2e2e2;
}

.sidebar-div p {
    height: 45px;
    line-height: 45px;
    text-align: center;
    color: rgb(0, 0, 0);
    font-size: 18px;
    border-bottom: 1px solid #e2e2e2;
    margin-bottom: 10px;
    font-weight: bold;
}

.sidebar-a {
    color: black;
    display: block;
    padding: 12px;
    text-decoration: none;
    border: 1px solid #e2e2e2;
    background-color: #f5f5f5;
    border-radius: 5px;
    margin-bottom: 10px;
}

.sidebar-a:hover {
    background-color: rgba(128, 128, 128, 0.418);
}

.a-active{
    background-color: rgba(128, 128, 128, 0.418);
}

.ul-active {
    text-align: center;
    padding: 0;
}

.ul-active li {
    margin: 5px 0;
}

.li-top {
    font-weight: bold;
    border-bottom: 1px solid #888888;
}

.li-active,
.li-top-active {
    color: rgb(68, 113, 211);
}

.main-div {
    width: 1060px;
    float: left;
}

.main-nav-top {
    width: 1060px;
    height: 48px;
    background-color: #3f3f3f;
    position: absolute;
    z-index: 888;
}

.main-nav-top-item {
    width: 200px;
    height: 48px;
    text-align: center;
    border: 1px solid #3f3f3f;
    border-radius: 5px 5px;
}

.main-nav-top-item a {
    line-height: 30px;
    color: white;
}

.main-nav-top-item a.now {
    background-color: #757575;
}

.main-nav-top-item a:hover {
    background-color: #757575;
    color: white;
}

.main-content {
    margin-top: 50px;
}